Let x represent the number. Use the given conditions to write an equation. Solve the equation and find the number.The graph shows the number of people in Country A without health insurance from year 0 through year 3. 
In year 0, there were 23 million people in Country A without health insurance. This number has increased at an average rate of 4.3 million people per year. In what year will the number of people without health insurance in Country A exceed the number in year 3 by 30.1 million?
A. year 9
B. year 12
C. year 11
D. year 10
Answer: D
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Decide if the expression is factored.x2 + 21x
A. No B. Yes
Evaluate the function for the given values of a and b. Then use the intermediate value theorem to determine which of the statements below is true.a = 1 and b = 2f(x) = 2x5 + 2x3 - 7x2 - 2
A. f(1 ) and f(2) have the same sign, therefore the intermediate value theorem cannot be used to determine whether f has a real zero between 1 and 2. B. f(1 ) and f(2) have the same sign, therefore the function f has a real zero between 1 and 2. C. f(1 ) and f(2) have opposite signs, therefore the function f does not have a real zero between 1 and 2. D. f(1 ) and f(2) have opposite signs, therefore the function f has a real zero between 1 and 2.
Solve the problem.A square has an area of 49 square inches. If the same amount is added to the length and removed from the width, the resulting rectangle has an area of 45 square inches. Find the dimensions of the rectangle.
A. 5 in. by 9 in. B. 3 in. by 4 in. C. 4 in. by 9 in. D. 5 in. by 10 in.
Write as a percent. Round to the nearest tenth of a percent. 1 7/9
A) 70% B) 6% C) 30% D) 140% E) 14%